Firearm



E. G. REISING Nov. 8, 1938.

FIREARM Filed Sept. 18, 1936 Patented Nov. 8, 1938 UNITED STATES PATENT OFFlCE Application September 1 15 Claims.

My invention relates to that class of firearms which are supported upon the person while being discharged, and an object of my invention, among others, is the production of a firearm of this type that shall be extremely simple in construction and efiicient in operation.

One form of a firearm embodying my invention and in the construction and use of which the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawing in which Figure 1 is a side view of the breech portion of a firearm embodying my invention with parts cut away to show construction, the breech bolt being in its closed position.

Figure 2 is a similar view with the receiver cut in central lengthwise vertical section, the breech bolt being in its open position.

Figure 3 is a view in cross section on a plane denoted by the dotted line 33'of Fig. 1.

Figure 4 is an isometric perspective view of the magazine tube.

My invention, while not limited in its use to any particular type of firearm, is especially applicable to the use of one that is supported against the shoulder of a person conducting firing operations, and my invention has to do more particularly with the mechanism for supplying ammunition, as cartridges, to the breech of the barrel.

In the accompanying drawing the numeral 5 denotes the receiver of a firearm that may be of any ordinary form and construction, said receiver having a breech bolt 6 mounted for reciprocating movement therein in any ordinary and wellknown manner. A barrel 7 is secured to and projects from the forward end of the receiver, the breech portion of such barrel only being shown, and the stock or similar means for supporting the receiver may be of any ordinary form and construction and for which reason it is not shown herein. Any desired type of firing mechanism may be employed such as is common to full automatic, semi-automatic, or other forms of firearms, and for this reason the firing mechanism is omitted with the exception of the breech bolt which is mounted for reciprocating movement in the receiver. The means for reciprocating the breech bolt will be well understood by those skilled in the art and for which reason a further and detailed illustration and description are omitted.

A magazine in the form of a tube 8 is attached in any suitable manner to the under side of the barrel so that its rear end may move up and s, 1936, Serial No. 101,368

down, such tube extending rearwardly with its rear end inclined upwardly. A plug 9 is mounted for movement lengthwise to the tube and is urged to its rearward position as by-a spring Ill. The upwardly inclined rear end ll of the tube extends into a chamber l2 in the receiver, and as shown in Fig. 2 of the drawing. From the inclined portion backwardly to its rear end the tube is preferably horizontal as at i3, and its rear end projects into a slot H through the under side of the receiver and into the chamber I2. A. slot 15 is cut through the under side of the tube 8, and the top of the tube has a discharge opening I6 for passage of cartridges from the tube into the breech bolt chamber in the receiver.

A cut-off I1 is pivotally supported underneath the receiver with its front end projecting through the slot IS in position to intercept cartridges l8 as they are forced backwardly by the plug 9. The member i? also serves as an elevator to tip the cartridges upwardly, as shown in Fig. 2, so that the nose of the cartridges will be in position to enter the opening IS in the breech of the barrel. A back stop 20 is secured in the rear end of the magazine tube said stop having a lug 2| projecting downwardly below the tube. This lug is slotted to receive the rear end of the cut-ofl l! which projects through said slot, a pivot 22 supporting the cut-off in its swinging movement. A spring 23 secured to the receiver and projecting downwardly therefrom engages with its free end in a notch in the under side of the cut-off, said spring acting to throw the forward end 'of the cut-01f upwardly into the position shown in Fig. 2. The spring acting on the cut-o'fi which is supported by the rear end of the tube also forces the rear, end of the tube upwardly when loading is taking place.

The front end 24 of the back stop 20 is inclined downwardly and rearwardly, the point of said inclined end being located to engage the rear end of a cartridge shell above the axial center thereof, and as shown in Fig. 1. This will cause the force of the spring Ill transmitted through the line of cartridges to hold the rear cartridge with its nose depressed and in engagement with the cartridge next in front, and as shown in Fig. 1 of the drawing.

By this arrangement I am enabled to use short or long cartridges, as irrespective of their lengths, the cartridges will be held in line within the magazine tube until the rear cartridge is engaged by the front end of the. cut-off and elevator l1, and as shown in Figure 2 of the drawing. The upper end of the cut-off is therefore permitted 55 to rise behind the rear end of the next to the rear cartridge in the tube and thereby cut off the backward movement while at the same time said end engages the rear cartridge and moves it upwardly to an inclined position and as shown in Fig. 2 of the drawing.

The Opening through the top of the tube is lipped in a well-known manner to prevent the cartridge from rising out of the tube until the proper time, notches being provided to permit release of the cartridge at the opportune moment.

In the operation of the device the breech bolt being closed as shown in Fig. 1 and the other parts being relatively positioned, after firing the breech bolt will be moved backwardly by the forces of .explosion or otherwise in accordance with the equipment of the gun. In this backward movement the shell in the breech is removed and extracted in any well-known manner'as by an extractor 26 and an ejector 21. In its closed position the magazine tube is held down by a holder 28, which is a cam surface on a rib 29 extending centrally along the under side of the breech bolt, and against the pressure of the spring 23. As the breech 'bolt moves back and the holder 28 clears the back stop 20 the spring 23 acts to lift the cut-off l1 and the rear end of the tube 8, the lips of the tube passing along grooves on opposite sides of said rib and the back stop engaging the bottom edge of said rib. As the cut-off rises as described it engages the next to the rear cartridge in the tube, preventing its backward movement, and, as hereinbefore described, it will be seen that this engagement takes place whether the cartridge be a short or a long cartridge. Just after the end of the cut-off engages the next to the rear cartridge the lifter point will engage the rear cartridge and tip it upwardly into the position shown in Fig. 2 ready for insertion in the opening 9 in the breech of the barrel.

In order to ensure the removal of the cut-off from the line of cartridges a stop 30 is interposed in the path of movement of a tail 3| on such cut-01f, so that when the holder 28 cams the back stop downwardly, such tail coming in contact with the stop 30, will positively move the cut-off from engagement with the line of cartridges and into the position shown in Figure 1.

In accordance with the provisions of the patent statutes I have described the principles of operation of my invention, together with the device which I now consider torepresent the best embodiment thereof; but I desire to have it understood that the device shown is only illustrative and that the invention may be carried out by other means and applied to uses other than those above set out.

I claim:

1. A firearm including a barrel, a 'magazine tube extending lengthwise along one side of the barrel and opening at the vertically movable rear end thereof, means for moving cartridges rearwardly in said tube, a lifter thinner than the diameter of said tube movably mounted to engage cartridges through a slot in the tube and raise them in and together with said tube in position for insertion into the barrel, and means for forcing cartridges into said barrel.

2. A firearm including a, barrel, a magazine tube extending lengthwise along one side of the barrel and opening at the vertically movable rear end thereof, means for moving cartridges rearwardly in said tube, a lifter thinner than the diameter of said tube movably supported by said tube to engage cartridges through a slot in the tube and raise them in and together with said tube in position for insertion into the barrel, and means for forcing said cartridges into the barrel.

3. A firearm including a barrel, a magazine tube extending lengthwise along one side of the barrel and opening at the vertically movable rear end thereof, means for moving cartridges rearwardly in said tube, a lifter thinner than the diameter of said tube movably mounted to engage cartridges through a slot in the tube and raise them in and together with said tube in position for insertion into the barrel, means for retaining the cartridges in line until the lifter is projected into their paths,-means for raising the lifter, and means for forcing cartridges into the barrel.

4. A, firearm including a barrel, a magazine tube extending lengthwise along one side of the barrel and opening at the rear end thereof, means for moving cartridges rearwardly in said tube, a lifterthinner than the diameter of said tube movably mounted to engage cartridges through a slot in the tube and raise them in said tube in position for insertion into the barrel, a back stop having an inclined front end to retain the cartridges in line in the tube until the lifter is projected into their paths, means for raising the lifter, and means for forcing said cartridges into the barrel.

5.'A firearm including a barrel, a magazine tube extending lengthwise along one side of the barrel and opening at the rear end thereof, means for moving cartridges rearwardly in said tube,

a back stop having an inclined end forming a part tridges out of said tube, means for operating saidlifter, and means for forcing cartridges into said barrel.

7. A firearm including a barrel, a magazine tube extending lengthwise along one side of the barrel and opening at the rear end thereof, means for moving cartridges rearwardly in said tube, a back stop secured to the tube within the bore therein and projecting thereinto to engage cartridges therein and having 2. depending lug, a lifter movably mounted in said lug for projection upwardly into said tube to lift cartridges therefrom, means for operating said lifter, and means for forcing cartridges into said barrel.

'8. A firearm including a barrel, a magazine tube extending lengthwise along one side of the barrel and opening at the top and rear end thereof back of the rear end of the barrel, means for moving cartridges rearwardly in said tube, a lifter movably supported by said tube to raise cartridges therefrom, a tail on said lifter, means to engage said tail to remove the lifter from the path of the cartridges in said tube, means for moving the lifter upwardly, and means for insertion of the cartridges into the rear end of the barrel.

9. A firearm including a receiver, a barrel secured to said receiver, a breech bolt movably barrel, means for moving cartridges and raise them in and mounted in the receiver, a magazine tube extending lengthwise along one side of the barrel and opening at the rear end thereof, said tube being movable into a chamber in the receiver, means for moving cartridges rearwardly in said tube, a lifter movably supported by said tube to engage cartridges and raise them into position in the tube for insertion in the barrel by said breech bolt, and means for operating the lifter.

10. A firearm including a receiver, a barrel secured to the receiver, a breech bolt movably mounted in said receiver, a magazine tube extending lengthwise along one side of the barrel and opening at the rear end thereof, said tube being movable into the chamber in the receiver, means for moving cartridges rearwardly in said tube, a back stop secured to and movable with said tube, a litter movably mounted in said back stop to engage cartridges and raise them into position for insertion in the barrel by said breech bolt, and means for raising said lifter.

11. A firearm including a receiver, a barrel se-' cured to the receiver,- a breech bolt movably mounted in the chamber in the receiver, a magazine tube extending lengthwise along one side of the barrel and opening into the chamber in the receiver, said tube being movable into and out of said chamber, means for moving cartridges rearwardly in said tube, a back stop supported by said tube in the path of movement of said breech bolt to depress said tube, a litter movably mounted to lift cartridges from said tube, and means for operating said litter and for raising said tube.

12. A firearm including a barrel, 2. magazine tube extending lengthwise along one side of the barrel and opening at the top and vertically movable rear end thereof back of the rear end of the cartridges rearwardly in said tube, a

lifter movably mounted to engage together with said tube in position for insertion into the barrel, means for moving said lifter in one direction, means for moving it in the opposite direction, and means for inserting said cartridges into the barrel.

13. A firearm including a barrel, a magazine tube extending lengthwise along one side of the barrel and opening at the top and vertically movable rear end thereof back of the rear end of the barrel, means for moving cartridges rearwardly in said tube, a lifter lever pivotally mounted to engage cartridges and raise them in and together with said tube in position for insertion into the barrel and also to engage said cartridges to prevent rearward movement thereof, means for operating the lifter, and means for inserting the cartridges into said barrel.

14. A firearm including a barrel, a magazine tube extending lengthwise along one'side of the barrel and opening at the rear end thereof, said tube being movable transversely, means for moving cartridges rearwardly in said tube, a lifter movably mounted on said tube to engage cartridges and raise them in said tube in position for insertion into the barrel, means effected by movement of said tube for moving said litter in one direction, and means for moving said lifter in the opposite direction.

15. A firearm including a barrel, a magazine tube extending lengthwise along one side of the barrel and opening at the vertically movable rear end thereof, means for moving cartridges rearwardly in said tube, a lifter movably mounted to engage cartridges and raise them in and together with said tube in position for insertion into the barrel and in the some movement to engage the row of cartridges and serve as a back stop for the same, and means for forcing cartridges into the barrel.

EUGENE G. REISING. 4g 

